P-328 SPRING: ⅝” wide, ⅜” center arbor with pear shape hole, outside end is a circular loop, as shown in photo, in 2?” coil. This could be a replacement for the spring in an Edison GEM cylinder phonograph. You should compare dimensions. This spring is “never used” original old stock. Please note: Springs are NOT returnable. Extreme caution must be used when working with mainsprings! Not responsible for damages or accidents!